Gripping-die for corrugating and barbing wire nails



(No Model.) l f l l J. E. EMERSON 8v' T. MID'GLE'Y. Y GRIPPING DIE PORCORRUGATING AND BJLRBI-lqrA WIRE NAILS.

l No. 372,845. Patented Nov. 8, 1887.

@C L@ 1 lill -lwlnwf @Fvg- A L WZ'/nesses Ilz-venan;

n an mnoknmf, washing@ n.c.

`diagrammatic views of the dies.

UNITED vSrirrns PATENT trice.

JAMES E. EMERSON AND THOMAS MIDGLEY, OF BEAVER FALLS,

PENNSYLVANIA.

(SHIPPING-DIE FOR CORRU-GATING AND BARBING WIRE NAILS.

SPECIFICATION forming part of Letters Patent No. 372,845, dated November8, 1887.

` Application filed August 15, 1887. Serial No. 247,000. (No model.)

.To all whom it may concern:

Be it known that we, JAMES E. EMERSON and THOMAS MIDGLEY, citizens ofthe United States, residing at Beaver Falls, in the county of Beaver andState of Pennsylvania, have invented certain new and useful Improvementsin Dies for Oorrugating and Barbing Wire Nails; and we do hereby declarethe following to be a full, clear, and exact description of theinvention, such 'as will enable othersA skilled in the art to whichitappertains to make and use the same.

Our invention relates to dies for forming and barbing or nicking wirenails, and will be hereinafter described, and particularly pointed outin the claimsv In the accompanying drawings, which form a part-of thisspecitication, Figure 1 is a plan view of one-half of a die. Fig. 2 is alongitudinal transverse section of one-half of a die. Fig. 3 is a sideview of a finished nail. Fig. 4 is an end view of the die. Figs. 5 andGare Figs. 7, 8, and 9 are enlarged detail views of insertible cuttersfor the die.

Reference being had to the drawings and the letters marked thereon, A Arepresent the two halves or sections of'the die for forming the nail ofour manufacture, and each half' or section is provided with asemicylindrical groove, a, which extends throughout its entire length.The adjacent or meeting surfaces of the two sections A A are corrugatedthroughout aV portion of their length, leaving the semicylindricalgroove intact at both ends of the die, as shown in Figs. l and 2, forthe purpose of corrugating a portion of the body of the nail made in thedie.

The barbs or niches b in the nail B are rcut by teeth c, formed on theends ofdovetailed cutters d, which are inserted in the die transverselyfrom each side in dovetailed grooves e, and are held in position by sideplates, fg, which may be attached to the sections A A by dovetailprojections h engaging with corre# spending grooves t', or they may beattachedwith rivets or screws.

C in Fig. 5 represents the heading-die or hammer for upsetting theprojecting end k of the stock (shown in Fig. 6) and forming the 'thewood into which it is driven.

head of the nail in the recess in one end of the die for forming thebody ofthe nail.

The dies thus constructed grip the stock, corrugate the nail, and holdit vagainst longitudinal displacement while the teeth c are forced ordriven into the sides of the projection Zot' the nail and form thebarbsl or niches b, and roughen the 'surface of that portion of' thenail and cause it to hold more iirmly in By thus firmly gripping andcorrugating a portion of the kbody of a nail in the die, the nail isabsolutely held against longitudinal displacement, and the heads of allnails made in the die are of uniform thickness.

The dies of our improved construction may be" applied to the usual formof machines einployed for manufacturing Wire nails, and .the insertiblecutters may be applied to other forms of dies for making other articleswithout departing from the spirit of our invention.

Instead of having two sets of cutters to form the barbs or niches onboth sides of the projections Z of the nail, a cutter may be employedwhich will form them on the apex of said projections, or one side only.

In another application filed herewith, Serial No. 246,999, we haveclaimed the nail.

Having thus fully described our invention, what we claim isl. A die forthe manufacture of nails, having a longitudinal groove in the adjacentfaces of its sections, a portion of said groove having plain smoothsurfaces and the remaining portion being corrugated and provided withprojections or teeth to forni barbs or niches on the corrugated portionof a nail, substantially as described.

2. A die for themanufacture of nails, having a longitudinal groove inthe adjacent faces of its sections, a portion at each end of said groovebeing in the same plane and having smooth surfaces, and an intermediatecorrugated portion having projections or teeth to form barbs or nicheson the corrugated portion of the nail, substantially as described.

3. A die for the manufacture of nails, made in sections having a portionof their adjacent surfaces corrugatedand provided with a longitudinalgroove, a portion of which is corru- ICOA gated, and projections o1-teeth to bau-b nv niche In testimony whereof we aiix our signatures bhesurface of part; of the corrugated portion in presence of two witnesses.of a nail, substantially as described. JAMES E. EMERSON.

4. A die made in sections and provided with THOMAS MIDGLEY. 5 insertibiecutters and corrugated adjacent \Vtnesses:

surfaces, in combination with a hammer or J. F. MERRIMAN, heading-die,Substantially as described. T. R. HERMON.

